A researcher wishes to conduct a study of a small number of subjects on a large hospital intensive care unit. To minimize problems associated with extraneous variables in the study setting, the researcher will
a. ensure double-blind data collection methods.
b. randomly assign subjects to treatment and control groups.
c. test the reliability of study measures.
d. train a small number of nurses to administer the intervention.
ANS: D
You might also like to view...
The school nurse is conducting pediculosis capitis (head lice) checks. Which of the following findings would indicate a "positive" head check?
1. White, flaky particles throughout the entire scalp region 2. Maculopapular lesions behind the ears 3. Lesions on the scalp that extend to the hairline or neck 4. Silver/white sacs attached to the hair shafts in the occipital area
A nurse had learned that more than 8% of Americans are currently living with diabetes mellitus. This statistic represents what epidemiological concept?
A) Morbidity B) Mortality C) Distribution D) Onset
A woman who has an average body mass index (BMI) should be expected to gain how much weight during her pregnancy?
a. More than 15 pounds c. 28 to 40 pounds b. 15 to 25 pounds d. 25 to 35 pounds
A nurse is preparing to suction a patient. The pulse is 65 and pulse oximetry is 94%. Which finding will cause the nurse to stop suctioning?
a. Pulse 75 b. Pulse 80 c. Oxygen saturation 91% d. Oxygen saturation 88%